SAPPHIRE AND DIAMOND RING

SAPPHIRE AND DIAMOND RING
Cushion mixed-cut sapphire of 5.11 carats, cushion-cut diamonds, platinum, ring size 5 ¾
Gübelin, 2019, report no. 19022006: 5.11 carats, Kashmir, no indications of heating, with information sheet
SSEF, 2019, report no. 104383: 5.115 carats, Kashmir, no indications of heating, 'Royal Blue'
GIA, 2018, report no. 6194902855: 5.11 carats, Kashmir, no indications of heating, 'Royal Blue'
AGL, 2018, report no. 1097161: 5.11 carat, undeterminable origin, no gemological evidence of heat or clarity enhancement